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Strong winds/coastal flooding sunday night,west and north west most at risk

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    #32
    jacksie66
    Closed Accounts Posts: 2,988 ✭✭✭jacksie66


    This post has been deleted.


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    #33
    M.T. Cranium
    Registered Users Posts: 14,327 ✭✭✭✭M.T. Cranium


    The strongest winds are about to hit the northwest. Gusts to 56 knots at the M4 buoy in Donegal Bay. Would expect peak gusts around 10:00 to 13:00 in Connacht and west Ulster, and a tendency for the maximum gusts to spread south so that the peak in west Munster may come this afternoon into early evening. That will not mean a large decrease further north but perhaps a slight decrease as this tendency plays out. In eastern counties would expect the maximum gusts around 2 p.m.

    Wind speeds have already been discussed, but as a general estimate, 130 km/hr peak gusts in exposed northwest, 120 km/hr exposed southwest, 110 km/hr southeast coast and some parts of east with good exposure to west. Some inland areas that are not overly exposed might see peak gusts of 80-90 km/hr.


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    #34
    vickers209
    Registered Users Posts: 1,462 ✭✭✭vickers209


    Ive posted this in the lightning thread but i feel is relivent to this thread too.

    Never seen a level 2 over parts of west ireland before :eek:
    level 1 for rest

    showforecast.cgi?lightningmap=yes&fcstfile=2015022406_201502230305_2_stormforecast.xml

    A level 1 was issued for the British Isles for chances of severe convective wind gusts and tornadoes.

    A level 2 was issued for western Ireland and western Scotland mainly for severe convective wind gusts.
    A deep low pressure system (<948 hPa in GFS model) moves to the north of Scotland. Its tight pressure gradients over the British Isles combined with the convective activity developing in the cool airmass pose a risk of severe wind gusts.

    ...Ireland and Scotland...

    The threat is particularly concentrated along the west coast as most of the energy for thunderstorms in the unstable airmass is supplied by the lapse rate between ocean and cold mid levels. WInds over 30 m/s at low to mid levels can be transported to ground as severe wind gusts in convective downdrafts. Over land, the friction causes strong low-level wind shear >17 m/s which can support tornadoes, if strong updrafts could be maintained. Convection will initally (09-12Z) be organized linearly along the occlusion curled up around the low and will likely pose a more concentrated threat. A second round with more clustered storms should occur in the evening at the passage of a shortwave trough.


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    #35
    mickger844posts
    Moderators, Science, Health & Environment Moderators Posts: 4,466 Mod ✭✭✭✭mickger844posts


    Relatively calm here in Waterford City with winds currently gusting to just 20km/h.

    www.waterfordcityweather.com


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    #36
    Oscar Bravo
    Registered Users Posts: 10,064 ✭✭✭✭Oscar Bravo


    Positively stormy in Castlebar now with some very heavy squally showers, hail thunder in the mix aswel.


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    #37
    Xenji
    Registered Users Posts: 11,505 ✭✭✭✭Xenji


    Oscar Bravo wrote: »
    Positively stormy in Castlebar now with some very heavy squally showers, hail thunder in the mix aswel.

    It has got far more severe in the last half hour.


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    #38
    El_Dangeroso
    Users Awaiting Email Confirmation Posts: 5,620 ✭✭✭El_Dangeroso


    Very blowy now in Galway city.


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    #39
    Oneiric 3
    Registered Users Posts: 6,235 ✭✭✭Oneiric 3


    Recorded my highest mean & gust speed of the Winter so far at 1.40pm with 28.7 kt & 63.5 knots respectively.

    339841.PNG

    New Moon



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    #40
    RoisinD
    Registered Users Posts: 408 ✭✭RoisinD


    Strongest winds since lunchtime. 65-70 mph gusts. Wasn't expecting it to quite so ferocious now.
    NW Clare


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    #41
    ch750536
    Registered Users Posts: 3,736 ✭✭✭ch750536


    Bit crazy here. Several flashes, windy, hail etc.


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    #42
    Storm 10
    Registered Users Posts: 5,874 ✭✭✭Storm 10


    ch750536 wrote: »
    Bit crazy here. Several flashes, windy, hail etc.

    Will u say where u are we are not mind readers


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    #43
    MillField
    Registered Users Posts: 635 ✭✭✭MillField


    Very strong wind and rain in Limerick city today. Coming and going every 20 odd minutes.


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    #44
    Meteorite58
    Moderators, Science, Health & Environment Moderators Posts: 11,819 Mod ✭✭✭✭Meteorite58


    Getting windier as the day goes on, recent gust 84 kph here near Tralee

    Big squally hail and rain showers ,11.4mm
    Nice bursts of sunshine too but you wouldn't want to venture too far away from shelter owning to frequent showers hammering down.

    Temp 6.3C down from 7.9C

    Bar987.6mb Rising Slowly


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    #45
    sunbeam
    Registered Users Posts: 1,802 ✭✭✭sunbeam


    Wind is really picking up again here in Achill. Lights are flickering.


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    #46
    sunbeam
    Registered Users Posts: 1,802 ✭✭✭sunbeam


    Bloody hell, it's squally now *eek*


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    #47
    Xenji
    Registered Users Posts: 11,505 ✭✭✭✭Xenji


    Crazy gusts in Castlebar now, just taken down a tree in the back garden.


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    #48
    JCX BXC
    Registered Users Posts: 18,106 ✭✭✭✭JCX BXC


    Very windy here in west Clare, nothing has fallen but the roof is making a not of noise.


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    #49
    Storm 10
    Registered Users Posts: 5,874 ✭✭✭Storm 10


    Frightening gusts of wind in Galway now I thought the roof was gone


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    #50
    corsav6
    Registered Users Posts: 1,597 ✭✭✭corsav6


    This feels more in the level 3, especially the gusts, some are extremely strong. Lights flickering every fee mins too so could be in for an interesting night.
    Just outside Newport, fairly elevated but not too exposed.


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    #51
    Julabo
    Registered Users Posts: 157 ✭✭Julabo


    Galway City just west of Salthill.

    Gusts are the strongest in a while I can remember. A different level to any of the winter storms.


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    #52
    ninebeanrows
    Registered Users Posts: 12,778 ✭✭✭✭ninebeanrows


    A 76 knot gust at Mace Head, must be a small circulation in the flow tightening the gradient.


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    #53
    JCX BXC
    Registered Users Posts: 18,106 ✭✭✭✭JCX BXC


    MON 23rd February, West Clare
    Gusts knocked out the satilite dish now. Winds getting even worse.


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    #54
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,702 Mod ✭✭✭✭DOCARCH


    Weathercheck wrote: »
    A 76 knot gust at Mace Head, must be a small circulation in the flow tightening the gradient.

    ...141 km/h gust...Status Red by Met E's own criteria.


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    #55
    Oneiric 3
    Registered Users Posts: 6,235 ✭✭✭Oneiric 3


    Turning very wild once again in east Galway. Mean speed now on 29 kts. Making a hell of a racket out there! :eek:


    PS, a fairly big chinmey fire a few doors down firing out sparks out all over the place. Much better than snow :D

    New Moon



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    #56
    M.T. Cranium
    Registered Users Posts: 14,327 ✭✭✭✭M.T. Cranium


    What was the max gust before the 76 kts at Mace Head, anyone notice? Radar echoes are moving across the country at about 80 knots or more, anything mixing down to ground level could provide tornadic wind streaks most likely in locations that have generally good exposure for 50-100 miles to their west-northwest to allow cells to develop undisrupted by terrain. Now that it's dark out, would use frequent lightning as a strong indicator of approaching tornadic cells, you obviously won't see or hear them coming at you.

    Watch in particular cells in north Mayo, east Tipp and near Kerry-Limerick border. All these are moving east-south-east, one or more could develop tornadic wind streaks. Would consider postponing any long-distance driving especially if it takes you through central counties or near west coast.


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    #57
    M.T. Cranium
    Registered Users Posts: 14,327 ✭✭✭✭M.T. Cranium


    High tides on Galway and Mayo coast shown in previous post are timed for about 8 to 9 p.m., seawalls may be over-topped around those times, especially Galway city.


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    #58
    M.T. Cranium
    Registered Users Posts: 14,327 ✭✭✭✭M.T. Cranium


    DOCARCH wrote: »
    ...141 km/h gust...Status Red by Met E's own criteria.

    What I would suggest here (or anywhere else) is to say red alert conditions could be encountered in very localized areas where convective cells mix down stronger wind gusts that are ongoing aloft. The chance of any one person in Ireland being in red alert conditions is probably less than one in a hundred thousand at this point but I would be watching radar for indications of locally stronger wind gusts than the general 110-120 km/hr in exposed locations this evening. These might not last very long but could do some moderate damage and blow high-sided vehicles over if they are crosswinds. Take your lorries off the road for a while if you're going north-south. Also, expect some coastal inundations around high tides which for many parts of the west coast would appear to be fairly soon (8-9 p.m.).


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    #59
    JCX BXC
    Registered Users Posts: 18,106 ✭✭✭✭JCX BXC


    How are the winds looking for the next few hours? They have peaked only an hour ago here in west clare.


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    #60
    Storm 10
    Registered Users Posts: 5,874 ✭✭✭Storm 10


    Looking at the radar on Met Eireann is that the low centre in the North West of the Country


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    #61
    Oneiric 3
    Registered Users Posts: 6,235 ✭✭✭Oneiric 3


    M.T. Cranium wrote: »
    What was the max gust before the 76 kts at Mace Head, anyone notice? Radar echoes are moving across the country at about 80 knots or more, anything mixing down to ground level could provide tornadic wind streaks most likely in locations that have generally good exposure for 50-100 miles to their west-northwest to allow cells to develop undisrupted by terrain. Now that it's dark out, would use frequent lightning as a strong indicator of approaching tornadic cells, you obviously won't see or hear them coming at you.

    Watch in particular cells in north Mayo, east Tipp and near Kerry-Limerick border. All these are moving east-south-east, one or more could develop tornadic wind streaks. Would consider postponing any long-distance driving especially if it takes you through central counties or near west coast.


    You can extract hourly data from various synoptic stations from this site M.T.

    http://www.meteociel.fr/observations-meteo/temperatures.php?region=uk

    Just click on the station you want and it will show hourly parameters for the day, with an option to go back to other days as well. This one is for Mace Head:

    http://www.meteociel.fr/temps-reel/obs_villes.php?code2=3963


    74 knots at Newport on the 7pm reports, 61 at Mace, 60 at Claremorris and 59 at Knock.

    http://www.met.ie/latest/reports.asp

    New Moon



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